KnowraSpark-gap transmitterLinked fromLinked fromThe 7 pages that link to Spark-gap transmitter, each with the reason it gives.All 7Broader topic 4Related 1Compared with 2Lee de ForestCompared with: De Forest’s tube-based radio technology offered an alternative to the spark transmitters common in early wireless.Reginald FessendenCompared with: Its damped-wave signals were poorly suited to carrying clear speech, motivating alternatives.